A) 10 min
B) 11 min
C) 13 min
D) 15 min
Correct Answer: D
Solution :
In first case \[\frac{61-59}{10}=K\left[ \frac{61+59}{2}-30 \right]\] ?.(i) In second case \[\frac{51-49}{10}=K\left[ \frac{51+49}{2}-30 \right]\] ?.(ii) By solving \[t=15\]min.You need to login to perform this action.
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